Conectar
by Thomas C. Scheier, Richard Whitlock, Mark Loeb, Philip James Devereaux, Andre Lamy, Michael McGillion, MacKenzie Quantz, Ingrid Copland, Shun-Fu Lee, Dominik Mertz
Sternal surgical site infections after cardiac surgery can lead to significant morbidity, mortality, and cost. The effects of negative pressure wound management and adding vancomycin as perioperative antimicrobial prophylaxis are unknown. The PICS-PREVENA pilot/vanguard trial, a 2x2 factorial, open label, cluster-randomized crossover trial with 4 periods, was conducted at two major cardiac surgery hospitals in Ontario, Canada. Sites were randomized to one of eight sequences of the four study arms (Cefazolin or Cefazolin + Vancomycin (not analyzed) and standard wound dressing or a negative pressure 3M Prevena incision management system (Prevena). Only diabetic or obese patients were eligible for the latter comparison. This trial investigated feasability including adherence to protocol of each intervention (goal: > 90% each) and loss to follow-up (goal:This study assessed the association between fine particulate matter (PM2.5) exposure during pregnancy and stillbirth in Pakistan. We hypothesised that higher PM2.5 exposure is linked to increased stillbirth risk.
A cross-sectional study using secondary data from the 2017 to 2018 Pakistan Demographic and Health Survey (PDHS), combined with satellite-derived PM2.5 exposure data.
The study covered urban and rural areas across Pakistan, including all four provinces (Punjab, Sindh, Khyber Pakhtunkhwa and Baluchistan) and administrative regions (Gilgit-Baltistan (GB), Islamabad, Federally Administered Tribal Areas and Azad Jammu Kashmir).
The study included 9172 married women aged 15–49 with at least one birth in the past 5 years. Women with incomplete pregnancy outcome data were excluded.
PM2.5 exposure was estimated using satellite data, matching PDHS clusters with the nearest air quality point via MATLAB. Monthly average exposure was categorised into quartiles.
Stillbirth, defined as pregnancy loss at ≥28 weeks gestation.
Multivariable logistic regression was used to assess the association between PM2.5 and stillbirth, adjusting for maternal age, gravidity, wealth index, birth interval, previous adverse pregnancy outcome and region of residence. The stillbirth rate in Pakistan for the most recent pregnancy was 17.0 (14.5–19.9) per 1000 births, with highest rates (28.9) in Baluchistan province. The mean level of PM2.5 exposure in Pakistan was 53.96 (SD 20.42; range 5.9–209.4) µg/m3. PM2.5 exposure was higher for urban (56.43) than rural (51.87) pregnancies, highest in Sindh (78.06) and lowest in GB (13.41) provinces. For every 1 µg/m3 average increase in PM2.5 during the pregnancy period, there was approximately 1% increase in stillbirth.
Increased PM2.5 exposure was strongly associated with stillbirth risk. This underscores the need for targeted public health interventions, such as government regulations, emission controls and clean energy initiatives to protect pregnant women in high-risk areas.
Cardiovascular diseases, overweight, type 2 diabetes and chronic kidney disease increase the risk of cardiovascular events.
Glucagon-like peptide-1 analogues are recommended by the European Society of Cardiology and the American College of Cardiology to lower the risk of death and progression of cardiovascular disease in patients with cardiovascular disease and type 2 diabetes. Semaglutide, tirzepatide and liraglutide are approved by the US Food and Drug Administration and the European Medicines Agency for the treatment of type 2 diabetes mellitus and overweight. CagriSema is currently not approved, but several phase III trials are ongoing.
No previous systematic review has investigated the effects of semaglutide, tirzepatide, CagriSema and liraglutide, which may not be disease-specific, on hard binary outcomes for all trial populations at increased risk of cardiovascular events.
We will conduct a systematic review and search major medical databases (Cochrane Central Register of Controlled Trials, Medical Literature Analysis and Retrieval System Online, Excerpta Medica database, Latin American and Caribbean Health Sciences Literature, Science Citation Index Expanded, Conference Proceedings Citation Index—Science) and clinical trial registries from their inception and onwards to identify relevant randomised trials. We expect to perform the literature search in December 2025. Two review authors will independently extract data and assess the risk of bias. We will include randomised trials assessing the effects of semaglutide, tirzepatide, CagriSema and/or liraglutide in participants with an increased risk of cardiovascular events. The primary outcome will be all-cause mortality. Secondary outcomes will be myocardial infarction, stroke and all-cause hospitalisation. Data will be synthesised by aggregate data meta-analyses, Trial Sequential Analyses and network meta-analysis, risk of bias will be assessed with Cochrane Risk of Bias tool V. 2, and the certainty of the evidence will be assessed by Grading of Recommendations, Assessment, Development and Evaluations and the Confidence in Network Meta-Analysis approach.
This protocol does not present any results. Findings of this systematic review will be published in international peer-reviewed scientific journals.
CRD42024623312.
Complete mesocolic excision (CME) with central vascular ligation (CVL) has been proposed as an oncologically superior surgical technique for right-sided colon cancer, mirroring the impact of total mesorectal excision (TME) in rectal cancer. While promising results have been reported, evidence from routine clinical practice, particularly within Swiss healthcare settings, remains limited. This study aims to evaluate the surgical and oncological outcomes of CME compared with standard right hemicolectomy (non-CME) over a 10-year period.
This is a retrospective cohort study of adult patients who underwent right hemicolectomy, either CME or non-CME, for histologically confirmed adenocarcinoma of the right colon or right third of the transverse colon at a tertiary centre, between 2010 and 2020. Patients with concomitant malignancies or distant metastases will be excluded. The primary outcome is 3-year and 5-year disease-free survival. Secondary outcomes include number of harvested lymph nodes, 3-year and 5-year overall survival, and 30-day morbidity.
This study was approved by the relevant Ethics Committee (CER-VD 2025-00503). All patients provided general consent for secondary use of anonymised data. Results will be submitted to a peer-reviewed journal and presented at national and international conferences.
by Min Zhang, Jining Yang
Increasingly frequent disruptions from diseases, disasters, and human activities pose a significant challenge to the resilience of the agri-food supply chain (AFSCRE). This study systematically explores the factors influencing AFSCRE and their mechanisms of action by integrating fuzzy Decision-Making Trial and Evaluation Laboratory (DEMATEL) and Interpretative Structural Modeling (ISM). Based on bibliometrics and expert interviews, a three-dimensional indicator system (12 key factors) contains flexibility, agility, and visibility. Triangular fuzzy numbers were used to process expert rating data, and combined with the Converting Fuzzy Numbers into Crisp Scores (CFCS) defuzzification method to establish a total influence matrix. The strength of the influence relationships between factors was determined through the setting of appropriate thresholds, which ultimately results in a five-layer hierarchical structure. The research results show that: level of application of digital technologies, information system maturity, information sharing and synergies, data sharing and analysis capacity and risk management capacity constitute the deep driving factors; degree of simplification of the supply chain structure and level of inventory management are the direct surface factors, presenting isolated characteristics. The study proposes resilience enhancement strategies such as supplier diversification, blockchain traceability technology embedding, and multi-body collaborative decision-making mechanisms, which provide decision support for coping with climate change and public health emergencies.by Berihun Agegn Mengistie, Getie Mihret Aragaw, Tazeb Alemu Anteneh, Kindu Yinges Wondie, Alemneh Tadesse Kassie, Alemken Eyayu Abuhay, Wondimnew Mersha Biset, Gebrye Gizaw Mulatu, Nuhamin Tesfa Tsega
BackgroundPrecancerous cervical lesions, or cervical intraepithelial neoplasia (CIN), represent a significant precursor to cervical cancer, posing a considerable threat to women’s health globally, particularly in developing countries. In Africa, the burden of premalignant cervical lesions is not well studied. Therefore, the main purpose of this systematic review and meta-analysis was to determine the overall prevalence of precancerous cervical lesions and identifying determinants among women who underwent cervical cancer screening in Africa.
MethodsThis study followed the Preferred Reporting Item Review and Meta-analysis (PRISMA) guidelines. The protocol for this systematic review and meta-analysis was registered on the International Prospective Register of Systematic Reviews (PROSPERO) (ID: CRD42025645427). We carried out a systematic and comprehensive search on electronic databases such as PubMed and Hinari. In addition, Google Scholar and ScienceDirect were utilized to find relevant studies related to precancerous cervical lesions. Data from the included studies were extracted using an Excel spreadsheet and analyzed using STATA version 17. The methodological quality of the eligible studies was examined using the Joanna Briggs Institute (JBI) assessment tool. Publication bias was checked by using the funnel plot and Egger’s tests. A random-effects model using the Der Simonian Laird method was used to estimate the pooled prevalence of pre-cancerous cervical lesions in Africa. The I-squared and Cochrane Q statistics were used to assess the level of statistical heterogeneity among the included studies.
ResultsA total of 112 eligible articles conducted in Africa, encompassing 212,984 study participants, were included in the quantitative meta-analysis. Thus, the pooled prevalence of pre-cancerous cervical lesions in Africa was 17.06% (95% confidence interval: 15.47%−18.68%). In this review, having no formal education (AOR = 4.07, 95% CI: 1.74, 9.53), being rural dweller(AOR = 2.38, 95% CI: 1.64, 3.46), history of STIs (AOR = 3.94, 95% CI: 2.97, 5.23), history of having multiple partners (AOR = 2.73, 95% CI: 2.28, 3.28), early initiation of coitus (AOR = 2.77, 95% CI: 2.11, 3.62), being HIV-seropositive women (AOR = 3.33, 95% CI: 2.32, 4.78), a CD4 count Conclusions
In Africa, the overall prevalence of pre-cancerous cervical lesions is high (17%). The findings of this review highlight that health professionals, health administrators, and all other concerned bodies need to work in collaboration to expand comprehensive cervical cancer screening methods in healthcare facilities for early detection and treatment of cervical lesions. In addition, increasing community awareness and health education, expanding visual inspection of the cervix with acetic acid in rural areas, offering special attention to high-risk groups (HIV-positive women), encouraging adherence to antiretroviral therapy for HIV-positive women, overcoming risky sexual behaviors and practices, and advocating early detection and treatment of precancerous cervical lesions.
To characterise and analyse doctoral programmes in nursing in Latin America through an exhaustive review of the official websites of the universities.
Descriptive and multiple correspondence analysis. Existing programmes were mapped out, identifying their geographic distribution and curricular characteristics.
A review of 59 doctoral programmes in nursing was conducted through the official web portals of universities in Latin America that were currently available (as of 2025) and that provided the required information. Thereafter, a matrix was built in Excel to consolidate the data.
The study identified an increase in the number of doctoral programmes in nursing offered in Latin America. Furthermore, these programmes were found to be more strongly concentrated in countries such as Brazil, Peru and Mexico, while other countries, including Guatemala and Uruguay, have recently incorporated such training.
Doctoral education in nursing in Latin America has experienced significant growth in recent years, consolidating itself as a fundamental pillar for the development of the discipline and the generation of knowledge in health. However, structural challenges persist, including limited funding for research, a lack of cooperation between universities, and the absence of programmes focused on Advanced Nursing Practice.
This contribution helps identify trends in the offering of doctoral programmes and inequalities in their geographic distribution, allowing for an understanding of how training varies across countries in the region while also consolidating Nursing as an academic and professional discipline.
To assess healthcare professionals' digital health competence and its associated factors.
Cross-sectional study.
The study was conducted from October 2023 to April 2024 among healthcare professionals in Italy, using convenience and snowball sampling. The questionnaire included four sections assessing: (i) socio-demographic and work-related characteristics; (ii) use of digital solutions as part of work and in free time, and communication channels to counsel clients in work; and DigiHealthCom and DigiComInf instruments including measurements of (iii) digital health competence and (iv) managerial, organisational and collegiality factors. K-means cluster analysis was employed to identify clusters of digital health competence; descriptive statistics to summarise characteristics and ANOVA and Chi-square tests to assess cluster differences.
Among 301 healthcare professionals, the majority were nurses (n = 287, 95.3%). Three clusters were identified: cluster 1 showing the lowest, cluster 2 moderate and cluster 3 the highest digital health competence. Most participants (n = 193, 64.1%) belonged to cluster 3. Despite their proficiency, clusters 2 and 3 scored significantly lower on ethical competence. Least digitally competent professionals had significantly higher work experience, while the most competent reported stronger support from management, organisation, and colleagues. Communication channels for counselling clients and digital device use, both at work and during free time, were predominantly traditional technologies.
Educational programmes and organisational policies prioritising digital health competence development are needed to advance digital transition and equity in the healthcare workforce.
Greater emphasis should be placed on the ethical aspects, with interventions tailored to healthcare professionals' digital health competence. Training and policies involving managers and colleagues, such as mentoring and distributed leadership, could help bridge the digital divide. Alongside traditional devices, the adoption of advanced technologies should be promoted.
This study adheres to the STROBE checklist.
None.
by Viet Anh Nguyen, Ngo The Minh Pham, Minh Ngoc Tran, Thi Bich Ngoc Ha, Thi Quynh Trang Vuong
IntroductionBonding fixed appliances to zirconia restorations is challenging, yet adult orthodontics increasingly involves ceramic crowns and patient-driven esthetic choices such as lingual appliances. Customized lingual brackets may improve fit and reduce adhesive thickness, but evidence on their bonding to zirconia is limited.
Materials and methodsThis in vitro study evaluated the shear bond strength of customized lingual brackets bonded to glazed zirconia after airborne-particle abrasion. Bracket manufacturing was either three-dimensionally (3D) printed cobalt-chromium or cast nickel-chromium. Primers were a universal adhesive (Single Bond Universal, 3M) or a primer containing 10-methacryloyloxydecyl dihydrogen phosphate Z-Prime Plus (Bisco), and adhesives were a light-cure orthodontic composite or a dual-cure resin cement. One hundred twenty-eight specimens (n = 16 per group) were tested. Shear bond strength was analyzed with three-way ANOVA, followed by post-hoc Tukey tests. Adhesive Remnant Index (ARI) scores were evaluated with ordinal regression. Significance was set at α = 0.05.
ResultsManufacturing modality significantly affected bond strength, with additively manufactured cobalt-chromium exceeding cast nickel-chromium (P = 0.049). The primer category and polymerization mode showed no significant main effects (P > 0.20) and no significant interactions. Group means clustered 9–10 MPa, and all combinations met the clinically accepted threshold. Additively manufactured brackets exhibited lower ARI scores than cast brackets (P Conclusions
On glazed, sandblasted zirconia, shear bond strength of customized lingual brackets showed a borderline main effect of fabrication method, whereas primer type and adhesive polymerization mode were not statistically significant. Failures were predominantly located at or near the zirconia–adhesive interface. Within this in vitro model, base manufacturing may warrant attention, whereas primer and curing mode may be selected for handling and workflow considerations, with clinical relevance yet to be established.
Advance Care Planning (ACP) has the potential to enhance end-of-life care and improve the allocation of healthcare resources for patients with cancer. However, its successful implementation requires considerable effort to overcome challenges and deliver health benefits. Healthcare providers and patients are key players in ACP, and their perceptions of the process must be understood to address implementation challenges effectively.
To identify barriers and facilitators to ACP implementation in Chinese oncology settings, providing a foundation for culturally appropriate healthcare strategies.
A qualitative study guided by the Consolidated Framework for Implementation Research (CFIR). Semi-structured interviews (n = 30) were conducted between April and August 2022 to synthesise the perspectives of nurses, physicians, patients with cancer and their families who had participated in ACP. Data were analysed using a directed qualitative content analysis approach, and reporting followed the SRQR guidelines.
Twenty implementation determinants were identified across four CFIR domains, including 13 barriers and 7 facilitators. Key barriers included limited adaptability of ACP to local cultural and family norms, high complexity of ACP processes, insufficient knowledge and skills among clinicians, unclear team responsibilities, low organisational readiness, limited resources and poor public awareness. Facilitators included strong team culture, clinician motivation, supportive leadership and alignment with national policies. Two determinants showed mixed influences: the relative advantage of ACP compared to existing practices, and the extent of collaboration with external organisations.
Our study highlights the challenges of implementing ACP in China, as well as the unique and specific barriers to implementation. These findings contribute to a deeper understanding of context-specific determinants and offer actionable insights to inform the development of culturally tailored ACP implementation strategies in resource-limited healthcare settings.
To inform the development of implementation strategies to promote ACP in healthcare systems dominated by traditional medicine.
by Andy Domínguez-Monterroza, Alfonso Mateos Caballero, Antonio Jiménez-Martín
Heart rate variability (HRV) is a well-established marker of autonomic regulation and undergoes profound maturation during early human development. In this study, topological data analysis (TDA) is applied to investigate the evolving geometric complexity of HRV across pediatric developmental stages. Using persistent homology in homological dimension 1, we extracted topological descriptors from time-delay embedded RR interval series of 127 individuals aged 1 month to 17 years. We identified statistically significant, age-dependent transformations in the topological structure of HRV signals. Neonates and infants exhibited a greater number and strength of persistent features, reflecting highly heterogeneous cardiac control dynamics during early autonomic maturation. In contrast, adolescents displayed reduced topological complexity and increased entropy, suggesting a shift toward more uniform and structured physiological control. Topological measures correlated with conventional HRV indices, confirming their physiological relevance. Furthermore, pairwise distances between persistence landscapes revealed an inverse relationship between intra-group topological variability and classical HRV measures. Collectively, our findings demonstrate that persistent homology provides a powerful, multiscale-aware framework to capture developmental trajectories in cardiac autonomic regulation, with potential applications in pediatric monitoring, developmental physiology, and early detection of dysautonomia.by Yizhuo Gong, Xinmeng Wang, Mingkun Yu, Peipei Zu
PurposeTo precisely evaluate the independent influence of two different optical zone (OZ) sizes (6.3 mm vs. 6.5 mm) on corneal biomechanical properties within 6 months after Small Incision Lenticule Extraction (SMILE) using multivariable-adjusted statistical models.
MethodsThis retrospective study included myopic patients who underwent SMILE between 2022 and 2024. Patients were grouped into two groups based on the planned OZ: Group A (6.3 mm, 44 eyes) and Group B (6.5 mm, 54 eyes). Corneal biomechanical parameters were measured using the Corvis ST preoperatively and at 1, 3, and 6 months postoperatively. Linear Mixed Models (LMM) were used to assess the independent effect of OZ size, adjusting for key baseline covariates and accounting for inter-eye correlation by including a random intercept for patient identifier (ID).
ResultsA total of 98 eyes were analyzed. Baseline analysis revealed a significant imbalance between the groups, with Group A (6.3 mm OZ) having higher myopia and a greater corneal stromal ablation depth (both P 0.05), with the sole exception of Ambrosio Relational Thickness Horizontal (ARTH) (P = 0.012). In contrast, several preoperative covariates, particularly corneal stromal ablation depth and preoperative central corneal thickness, were identified as significant predictors of multiple postoperative biomechanical parameters.
ConclusionThe independent effect of a 0.2 mm difference in optical zone size on corneal biomechanical properties after SMILE appears to be limited. After comprehensive statistical adjustment, the results suggest that preoperative anatomical and surgical parameters, especially corneal stromal ablation depth, are the primary drivers of the postoperative biomechanical response, rather than the minor difference in OZ size itself. This study underscores the importance of confounder adjustment in refractive surgery research and suggests that maximizing the residual stromal bed may be more critical for maintaining corneal biomechanical integrity than fine-tuning the optical zone diameter.
To assess maternal medical conditions, physical and surgical ailments, contraceptive use and barriers to its use, maternal mental health, neonatal health, breastfeeding practices and available social support in the postpartum period.
A prospective cohort study.
A large tertiary care centre.
12 245 women who delivered after 22 weeks gestation in the year 2022.
Three pre-specified exposures, namely mode of delivery, presence of significant risk factors and preterm delivery within the cohort, were used to identify potential groups of women who would need additional support.
The primary outcome was the number of unscheduled visits by the mother or child and the indications for these visits.
The secondary outcomes in mothers included unhealed wound sites, anaemia, increase in body mass index (BMI) by >3, persistent high blood pressure, pain in the abdomen or pelvis, urinary or bowel problems, musculoskeletal pain, abnormal maternal mental health, breast-related issues and barriers to breastfeeding, contraceptive use and sexual activity.
Only 2% of women and children were lost to follow-up. Nine women and 75 babies died. The majority of infant deaths were related to serious congenital diseases. Unscheduled visits to the health facility were seen in 44% of the cohort, most commonly for upper respiratory infections and fever in the mother and baby. 41 mothers and 741 infants needed admission to hospital. Hospitalisation was more common in those with risk factors or preterm delivery. High blood pressure was seen in 3 to 4% and anaemia in 4% of the cohort. Wound infection was seen in 3 to 4% and urinary incontinence in 2% of women. Wound infection was more common with instrumental delivery. Bowel incontinence was rare. A fourth of the cohort had musculoskeletal pain, especially back pain, which was more common after caesarean delivery. Only 5.5% of the cohort had unsatisfactory mental health, and these women were more likely to have abnormal mental health scores with the NICE Questionnaire at screening. The family APGAR of the cohort was 9/10, and 95% belonged to the middle-income group. 2.6% of neonates had delayed milestones, and this was more common in the group with risk factors and preterm delivery.
Healthcare utilisation was mainly for minor complaints. Re-admissions were rare, as intrapartum and immediate postpartum care were optimal. Women who delivered by caesarean section or delivered a preterm child needed additional support in the postpartum phase. NICE Questionnaire is a quick and easy screening tool to identify unsatisfactory mental health and should be used before discharge, postnatally, even in busy settings. The implementation of formal telephonic support 24 hours a day in birthing facilities should be explored in the future. Holistic postnatal care of mother and child during the immunisation of the baby would be the best opportunity to improve the quality and coverage of care in the postnatal phase.
CTRI/2022/03/041343.
Drug-related hospital admissions (DRAs) are prevalent among older adults, with a substantial proportion deemed preventable. Despite their frequency, little is known about the prognosis of DRAs in this population, particularly concerning mortality and hospital readmissions. The objectives were to assess the prognosis of DRAs in older patients, focusing on 6-month mortality and unplanned readmissions.
Prospective cohort study.
A 20-bed acute-care geriatric unit within an academic hospital.
All patients aged 75 years or older hospitalised in the unit during 2023.
The primary outcome was 6-month all-cause mortality. The secondary outcome was the rate of unplanned hospital readmissions, including emergency department visits, within 6 months. DRAs were identified using a two-step standardised review process. Kaplan–Meier survival curves and Cox proportional hazards models were used to estimate hazard ratios (HRs) for mortality. Fine and Grey competing risk models were applied for the analysis of unplanned readmissions. Multivariable models adjusted for age, sex, Charlson Comorbidity Index, medication count, activities of daily living score, long-term care residency and prior hospitalisations.
Among 483 patients included (median age 86 years [IQR 81–91]), 207 (43%) were admitted for a DRA. At 6 months, mortality was significantly lower in patients with DRAs compared with those without (19% [n=39] vs 37% [n=102]; p
DRAs have a distinct prognosis as compared with other causes of admission among older patients. Identifying and managing DRAs are crucial for minimising preventable complications in this vulnerable population.
This study aimed to develop and validate a standardised transitional care programme for postoperative gynaecologic cancer patients utilising the Omaha system framework.
A preliminary transitional care programme was constructed through literature review, semi-structured interviews and multidisciplinary team discussions. The programme was refined via two rounds of Delphi expert consultations involving 17 oncology nursing specialists. Consensus criteria included expert authority coefficient (Cr), Kendall's W test and coefficient of variation (CV).
The Delphi consultation demonstrated robust expert consensus, with high authority coefficients (Cr: 0.886 in Round 1; 0.906 in Round 2), exceptional participation rates (88.2% and 100% response rates across two rounds) and statistically significant concordance as evidenced by Kendall's W values (0.233–0.358 and 0.326–0.383; all p < 0.01). All coefficients of variation (CV) metrics fell within acceptable ranges (0.09–0.42 in the initial phase; 0.08–0.27 post-refinement).
The Omaha system-based transitional care programme exhibits strong expert consensus, scientific rigour and clinical applicability, providing a structured approach to improving postoperative recovery in gynaecologic cancer patients.
This protocol standardises postoperative care transitions for gynaecologic oncology patients by integrating multidimensional assessments (physiological, psychosocial and health behaviour domains) and family-centred education. Clinicians can utilise its evidence-based framework to reduce preventable complications, enhance caregiver preparedness and improve continuity of care between hospital and home settings.
Six postoperative gynaecologic cancer patients and eight family caregivers participated in semi-structured interviews to identify unmet transitional care needs. Their insights informed the design of intervention components, including self-management education and psychosocial support strategies. Patients reviewed draft materials for clarity and cultural appropriateness during Delphi Round 2.
by Yao-Yao Mao, Ke Zhang, Dan-Dan Zhao, Jia-Wei Cui, Zhan-Dong Lin, Cong-Yue Zhang, Yue-Min Nan
BackgroundClinical practice commonly uses the Yi-qi Huo-xue formula (YQHX), a traditional Chinese herbal medicine comprising eight herbal components, to treat liver fibrosis resulting from various etiologies. Nevertheless, this formula’s specific active constituents and underlying mechanisms of action remain to be fully elucidated.
MethodsThe drug components of YQHX and potential targets for liver fibrosis were identified via the screening of the various databases. Qualitative and quantitative identification of chemical components of drug-containing serum by Ultra Performance Liquid Chromatography (UPLC).Liver fibrosis was induced in mice through the intraperitoneal injection of carbon tetrachloride, followed by oral administration of YQHX. RNA-Seq quantified transcriptomic profiles in liver tissue.The degree of liver fibrosis was assessed via histopathology staining, the transcription and expression of relevant proteins were analyzed. Primary cells were isolated for in vitro experiments to validate the influence of YQHX on the associated signaling pathways.
ResultsNetwork pharmacology identified IL-1β, IL-6, and TNF-α as potential targets for YQHX in treating liver fibrosis.The UPLC detected multiple potential active components. In vivo experiments showed that YQHX reduced serum AST and ALT levels in liver fibrosis-induced mice, decreased liverIL-1β, IL-6, and TNF-α levels, and improved liver fibrosis.The results of transcriptomics suggest that YQHX can reduce the expression of “collagen-activated signaling pathway,” “MyD88-dependent toll-like receptor signaling pathway,” “fibrinolysis” and “toll-like receptor 4 signaling pathway”. Furthermore, YQHX reduced the aggregation of M1 macrophages in the portal area and the deposition of α-SMA. Primary bone marrow-derived cells successfully transformed into M1 macrophages after induction, and YQHX reduced the levels of IL-1β, IL-6, and TNF-α in the supernatant of M1 macrophage culture and decreased the activation of primary hepatic stellate cells indirectly co-cultured with the supernatant. Interestingly, TLR4 agonists weakened this inhibitory effect. Both in vitro and in vivo experiments demonstrated that YQHX could inhibit the expression of the TLR4/TRAF6/MyD88 pathway in M1 macrophages.
ConclusionWe reveal here the molecular mechanism and signaling pathway of YQHX in treating liver fibrosis by utilizing network pharmacology in conjunction with in vivo and in vitro experiments. The findings offer insights that may advance the clinical application of YQHX.
by My Ha Nguyen, Toan Van Ngo, Linh Gia Vu, Dat Cong Truong, Hai Minh Vu
BackgroundDespite the hazardous nature of rice farming, limited evidence exists regarding farmers’ knowledge, attitudes, and practices (KAP) toward accident prevention, and no standardized instrument is currently available to measure these dimensions in Vietnam or comparable contexts. This study aimed to develop and validate a psychometrically sound instrument for assessing rice farmers’ KAP related to occupational accident prevention.
MethodsInstrument development and validation were carried out in three stages. First, an initial item pool was generated through an extensive review of existing literature. Second, content validity was established through expert consultation involving professionals in agriculture, occupational health, and public health. Third, a pilot study was conducted with 168 rice farmers in Thai Binh Province, Vietnam, to evaluate the instrument’s psychometric properties.
ResultsExploratory factor analysis identified 20 items across five factors in the knowledge domain, nine items forming a single factor for attitudes, and 17 items grouped into four factors for practices, explaining 85.8%, 43.8%, and 72.3% of the total variance, respectively. Confirmatory factor analysis supported these structures, demonstrating satisfactory model fit across domains. The instrument exhibited high internal consistency, with Cronbach’s alpha values ranging from 0.894 to 0.969 for knowledge, 0.833 for attitudes, and 0.805 to 0.933 for practices.
ConclusionThe validated instrument provides a reliable and valid measure of rice farmers’ knowledge, attitudes, and practices concerning occupational accident prevention. It offers a robust foundation for future research, monitoring, and targeted interventions aimed at improving safety behaviors and reducing injury risks among agricultural workers.
by Bwambale Jonani, Emmanuel Charles Kasule, Bwire Roman Herman, Joel Fredrick Arturo, Mwesigwa Calvin Mugambwa, Ssebulime Stephen, John Bosco Mundaka, Richard Kwizera, Gerald Mboowa, Felix Bongomin
IntroductionSickle Cell Anemia (SCA) is a significant genetic disorder in Africa; however, comprehensive data on its prevalence and geographic distribution remain limited. We aimed to estimate the pooled prevalence of SCA (HbSS) in African populations and examine regional, demographic, and temporal variations from 1994–2024.
MethodsWe systematically searched PubMed, Scopus, Google Scholar, and BASE databases for studies reporting SCA prevalence in African populations. Screening and quality assessments were performed using JBI tools. A random-effects meta-analysis with logit transformation was performed, with subgroup analyses by region, age, sex, and study design. Meta-regression explored heterogeneity sources, including geographic region, age category, diagnostic method, study design, and publication year.
ResultsFrom 115 studies with 1,203,839 participants and 17,458 confirmed HbSS cases, the pooled prevalence was 1.43% (95% CI: 1.08%–1.88%), with substantial heterogeneity (I2 = 99.1%) and a prediction interval of 0.21%–8.91%. Central Africa showed the highest prevalence (1.99%), and Southern Africa showed the lowest (0.59%). Children exhibited a higher prevalence (1.65%) than adults (0.45%), while sex differences were non-significant (males 2.71%, females 1.74%; p = 0.694). The prevalence has remained stable over three decades despite a six-fold increase in research output, although wide prediction intervals indicated substantial between-study variability. Electrophoretic techniques predominated (86.4% of cases). Diagnostic method (χ² = 16.73, p = 0.033) and age category (χ² = 33.66, p 2 = 98.6%). Leave-one-out sensitivity analysis showed that no single study significantly impacted the pooled estimates.
ConclusionSCA represents a substantial and geographically variable public health challenge across Africa. These findings highlight the need for region-specific interventions, expanded newborn screening programs, improved diagnostic accessibility with quality assurance for point-of-care technologies, and continued surveillance to address geographic gaps.
FreshRSS 